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A compact engine design has been achieved by positioning the chain drive on the gearbox side and by using a four piece chain drive distributed on two planes. Thus, it is possible to install multi cylinder engines in smaller model series without the need for extending the front end of the vehicle. The chain drive helps reduce operating costs, because it is maintenance free and designed for long life. Audi V8 4.2 5V chain Audi V8 4.2 5V chain ZR series Competitors of the V8 464 mm 516 mm approx. 656 mm Table of contents Contents . 4 Introduction .6 1.6 litre R4 FSI engine Description .8 Performance features 9 Chain drive . .10 Intake system . .12 Oil circuit . .14 Cooling system .15 Fuel system . .16 3.2 litre V6 FSI engine Description . .18 Performance features .19 Chain drive . .20 Intake manifold .23 Oil circuit . .24 Cooling system .25 Petrol direct injection with supply on demand fuel system . .26 3.0 litre V6 TDI engine Description . .28 Performance features .29 Chain drive . .30 Backlash compensation .31 Intake manifold .32 Charging . .33 Fuel system . .34 4.0 litre V8 TDI engine Description . .36 Performance features . .37 Chain drive . .38 Engine lubrication . .39 Cooling system .40 Air intake . .41 Fuel system . .43 Charging . .44 Exhaust system . .45 4.2 litre V8 engine Description . .46 Performance features . .47 Chain drive . .48 Intake system . .51 6.0 litre W12 engine Description . .52 Performance features . .53 Chain drive . .54 Cooling system .56 Oil circuit . .57 Exhaust system . .58 The Self Study Programme imparts a basic knowledge of the design and function of new models, new automotive components or new technologies. Reference Note The Self Study Programme is not a Repair Manual The values given are intended as a guideline only and refer to the software version valid at the time of publication of the SSP. For ma